Change the width and height of an animated GIF on your device. Keep the aspect ratio for a proportional resize, or use explicit dimensions when the destination requires them.
100 MB input limit · Processing runs on your device · No watermark added
Change dimensions without cutting out the subject
A GIF resizer changes the pixel dimensions of the whole animation. It is useful when an image is too wide for a layout or when a destination asks for a specific width and height. Resizing does not choose a smaller area of the original image. If you need to remove empty space or keep only a face, crop the GIF first. Then resize that selected area to the dimensions you need.
Use the aspect ratio lock for natural proportions
Keep the aspect ratio locked when you want the same composition at a smaller size. Changing one dimension then adjusts the other proportionally. Unlocking the ratio allows an exact width and height, but may stretch the picture. For a square result from a rectangular source, a square crop followed by a proportional resize usually preserves the subject better than squeezing the entire animation into a square. The contain option fits the whole image inside the selected canvas and fills the unused area with the chosen background. In an engine test, our own 640 × 360 motion graphic (946,746 bytes) produced a 111,194-byte GIF on a 128 × 128 transparent canvas, and a 275,745-byte GIF on a 320 × 320 transparent canvas. Both retained all 120 frames and their six-second duration. These examples demonstrate square canvas sizes, not compliance with every platform requirement. Discord’s sticker specification is exactly 320 × 320 px, but it also requires APNG for animation or PNG for a static sticker. A 320 × 320 GIF does not meet that format requirement merely because its dimensions match.
Match a layout, then check file size separately
An emoji slot, documentation column and presentation slide can require very different dimensions. Treat a dimension preset as a starting point and check the destination’s current requirements before exporting. A correctly sized GIF can still exceed its file-size limit. Reducing width and height often reduces file size, but the resizer does not guarantee a byte target; use the compressor afterward if you also need to meet a size limit.
What to check before downloading
Review small text, thin lines and faces in the resized preview. Enlarging an animation cannot restore detail missing from the source and can make pixelation more visible. Check several frames rather than only the opening image. Processing takes place on your device, with a 100 MB input cap and additional practical limits from browser memory. Start with a smaller file if your browser cannot complete the resize.
How to use this gif resizer
- 1Choose an animated GIF.
- 2Enter a width and height or a percentage.
- 3Keep the aspect ratio locked unless you intend to stretch the image.
- 4Resize, inspect the preview and download the result.
Before and after
Measured with the same engine that runs in your browser.
| Sample | Size | Output | Frames | Settings |
|---|---|---|---|---|
| 640×360 motion graphic → 128×128 square fit | 925 KB → 109 KB | 128 × 128 6.0s | 120 | width: 128 · height: 128 · fit: contain · background: transparent |
| 640×360 motion graphic → 320×320 square fit | 925 KB → 269 KB | 320 × 320 6.0s | 120 | width: 320 · height: 320 · fit: contain · background: transparent |
Frequently asked questions
How do I resize a GIF without changing its aspect ratio?
Keep the aspect ratio lock enabled and change one dimension or use percentage scaling. The other dimension follows proportionally.
Can I resize a GIF to a square without stretching it?
Use contain to fit the whole animation inside a square canvas with space around it, or crop it to a square first and then resize. Stretch can distort the subject.
Does resizing a GIF reduce its file size?
Smaller dimensions often use fewer bytes, but colors, motion and frames also affect file size. Use the GIF compressor if you need a specific byte limit.
Can I make a small GIF sharper by enlarging it?
Enlarging increases pixel dimensions but cannot recreate missing source detail. Use a larger original when possible.
Will resizing remove the animation or add a watermark?
The tool is designed to resize the animation, rather than export only a still image. It adds no watermark; inspect the downloaded animation before publishing.